Typewriter calculating machine



1949 F. J. TILLMAN 2,483,636

TYPEWRITER CALCULATING MACHINE Original Filed April 3, 1937 2 Sheets-Sheet l Nov.'8, 1949 F. J. TILLMAN 2,487,616

TYPEWRITER CALCULATING MACHINE Original Filed April 3, 1937 2 Shecs-Sheet 2 wan . a 'IIIIIIIII 0 0 an m Q aw l ma EN \mm 1% AW Patented Nov. 8, 1949 UNITED STATES PATENT OFFICE Original application April 3, 1937, Serial No. 134,818, now Patent No. 2,347,720, dated May 2, 1944. Divided and this application May 1, 1944,

Serial No. 533,520

4 Claims.

This invention relates to calculating machines for use in connection with standard typewriters and is a division of my co-pending application Ser. No. 134,818 filed April 3, 1937, Patent No. 2,347,720, and it has special reference to im" proved mechanisms for cooperation with the paper carriage of the typewriter and the counting carriage of the accumulators.

Another object of the invention is to provide the calculating machine with three separate and distinct carriages, all having cooperation with each other when the numeral keys of the typewriter are selectively operated in calculation.

Various other objects and numerous advantages of the invention will be readily apparent from the following description, reference being had to the annexed drawings, in which- Figure 1 is a front elevation of the present invention apart from the typewriter for which it is intended, the base portion being in section.

Figure 2 is a vertical longitudinal sectional elevation of the rear part of Fig. 1 taken approximately on the line 22 of Fig. 1.

Figure 3 is a plan elevation of a fragmentary portion of one of the master gears shown in Fig. l, and showing the relation of said gear with one of the accumulators.

Figure 4 is an enlarged front elevation of a part of the mechanism in its normal or unoperated position, controlled by the typewriter paper carriage for selecting the denominational orders through which the calculating mechanisms will be operated when the typewriter numeral keys are'successively operated.

Figure 5 is an enlarged front elevation of the mechanism shown in Fig. 4, in one of its selected denominational adjusted positions.

Figure 6 is an enlarged front elevation of the mechanisms shown in Figs. 4 and 5, in the highest denominational positions to which it can be moved.

Referring to the drawings the only portion of a typewriter which is adapted to be cooperative with the mechanisms shown is the laterally shiftable paper carriage I, indicated by dotted lines in Fig. 2, and the relatable rack bar 2 designed and adapted to support a number of cam blocks 3 in different selecting adjustments or columnar positions, having a desired relationship to the columnar position to which the paper carriage is shifted during numeral key operations of the typewriter such as shown and described in my Letters Patent 2,347,720, the numeral keys of the typewriter cooperating with the calculating mechanism having their digit calculating values 2 transferred to the horizontal shaft 69 through the gear train 66, 88 and the reversing gear 6'! with which the gear 68 is cooperable.

The shaft 69 is polygonal in cross-section, and the gear 38 is slideabl thereon for cooperation with the reversing gear 31 and when the said gear 58 is rotated the shaft 69 will be rotated thereby. A carriage I3 is mounted for sliding movement along the shaft 69 and along another shaft H, said carriage having a roller '12 operating on a rail 13. The shafts 69 and H and the roller 12 and rail '13, cooperate to support and guide the carriage l0.

Splined upon the shaft 69 for sliding movement thereon and have rotation thereby are three master gears 75 which are equally spaced from one another and held in their respective positions on the shaft 69 by a pair of sleeves 74.

When the numeral keys of the typewriter are operated, their digit values will be transferred through the described gear train for imparting rotary motion to the shaft 59 and consequently to the master gears 15 on said shaft, the master gears '15 each adapted to be laterally moved into cooperative positions for cooperation with the pinions 80 of respective accumulators one of I which being shown in Fig. 3 and designated A.

The supporting structure for the typewriter comprises a base 52 having a rearwardly disposed and vertically extending wall [2a with side portions 521). A lever 204 is mounted on a pivot 235 at the rear of the machine. An arcuate rack 203 is formed on the upper end of the lever 204 and meshes with a complementary rack 201 mounted in a carriage 208. The carriage 208 is mounted for horizontal reciprocating movements on rails 209 (Figs. 1 and 4). When the carriage is moved along the rails 289, it will oscillate the lever 234. The lower end of the lever 204 is attached to an arcuate rack 2 [0 which meshes with a pinion 2!! attached to a rotary shaft 252 supported near the base of the machine and extending forwardly. A gear wheel 213 is attached to the forward end of the shaft 2 I 2 and meshes with a rack 2 i 4 attached to the carriage It. Thus, the carriage 268 constitutes means for operating the connections leading to the carriage '10 for shifting said carriage 5Z3 laterally to different denominational order positions. This means that, by operation of the carriage 208, the carriage it can be operated to locate the gears 15 in different denominational order positions with respect to their associated accumulators. Thus, by movement of the carriage 208 to one definite position,

all of the gears 15 will be located so as to operate the associated units transfer pinions Sli; by moving the carriage 288 to another definite position, the gears 75 will be located in tens denominational order for operating the tens pinions; and, by moving the carriage 208 to other selected positions, the gears 15 will be located in corresponding denominational orders preparatory for operation of the corresponding transfer pinions of respective accumulators.

The carriage 263 is operated by the typewriter paper carriage i which supports in adjusted positions on the bar 2 the required number of cam blocks 3 which may be mounted in selected adjusted positions on said bar 2. Each cam block 3 has a rearwardly extended cam arm 21%. The carriage 208 supports a detent comprising an arm 2l'i, a downwardly extended arm 218 and an upwardly extended shoulder 219. ihe carriage 208 also supports another detent comprising an arm 22s, a downwardly extended arm 22! and an upwardly extended shoulder 222. The arms Zifi and EH are connected by a spring 223. The cam arm 2i3 cooperates with the shoulders 259 and 222 to shift the carriage 2G8 along the rails 253i) and thereby operate the carriage 10.

In the idle or unoperated position of the carriage 2%, the arm 212i is in engagement with a rigidly supported pin 22%. This holds the detent arm 226 in a downward position (Fig, 4) so that the shoulder 222 is below the lower edge of the cam arm 256 and cannot be engaged thereby when the paper carriage i moves toward the left in tabulating or letter-spacing move ments. However, the shoulder 2E9 will be engaged by the cam arm 21%;, and continued movement of the paper carriage i toward the left in letter-spacing or in tabulating movements will move the carriage 288 along with it until the arm M8 strikes against the pin 22%. When the arm 2 i 8 strikes against the pin 22%, the shoulder 2!!! will be moved downwardly out of engagement with the cam arm 2%, at which time the carriage 268 is released and can return to its idle or unoperated position. For operating the lever 294130 return the carriage 288 to its idle or unoperated position after it has been released from the cam arm 25%, a spring 225 is provided and has one end attached to a stationary part of the machine and its opposite end attached to an arm 226 connected with the lever is? (Figs. 1 and 2).

As shown, the left-hand edge of the shoulder M9 is beveled or inclined and the right-hand edge of the cam arm 2M3 is beveled or inclined. Because of these beveled surfaces, the paper carriage i of the typewriting machine can be moved to the right to any desired position because the cam arms 2&6 will escape over the shoulder 219 without objectionable resistance, the spring 223 yielding to permit such escapement.

When an item is to be recorded and entered into any one of the accumulators, one of the cam arms 2H5 by engagement with the shoulder 219, moves the carriage along the rails 299 and thereby operates the lever 2M and the gear 2E3 to move the carriage it. This movement of the carriage iii places the gears '55 in the proper denominational orders so that, when the first digit key is struck, the digit in the highest denominational order will be printed and entered into the corresponding transfer pinion 8E. The paper carriage I will then move one letter space, thereby moving the carriage id to locate the gears 15 at the next lower denominational order. When the second digit key is operated, the digit rep-resented thereby will be printed on the paper in the paper carriage and entered into the transfer pinion 80 in the next lower denominational order, and these operations are repeated until the last digit in the item is entered; with the exception that, when the zero key is operated, the zero is printed on the paper in the paper carriage, the gears are shifted one step toward lower denominational orders, but are not rotated.

A horizontal projection i2? extends from the arm 2i? below the shoulder 2i9 thereof for engagement with the guiding portion i2'ia, formed on a part i2'ib fixed to the supporting structure of the typewriter, said projection i2? while engaging the portion i2ia, preventing disengagement of the shoulder 219 of the arm 2!? from the cam arm 2E6, while the carriage 298 is being moved by the cam arm of the block So that the arms 2H and 22% will not be swung above a horizontal plane, respective projections B extending from the carriage its are provided for normal abutment with said arms.

From the foregoing, the construction and the arrangement and the combination of the parts and their cooperative relationship with each other may be widely varied within the scope of equivalent limits without departure from the nature and principle of this invention. In these particulars, I do not restrict myself beyond the scope of the appended claims, in which I claim:

1. A writing machine having a paper carriage adaptedto be moved in letter-spacing order, a cam supporting element on said carriage having a projection thereon, a second carriage adapted to he moved by the projection of said element, guiding means for said second carriage paralleling said paper carriage, a rack borne by said second carriage, a counting carriage having cooperable gearing, and a lever having teeth on each end in mesh with said second carriage and said counting carriage gearing respectively.

2. A writing machine having a paper carriage adapted to be moved in letter-spacing order, a cam supporting element on said carriage having,

means cooperalcle with the second carriage rack and the counting carriage for transferring the letter-spacing travel order of said paper carriage to said counting carriage and a fixed stop in alinement with said swingable element and remote from said carriage for releasing said swingable element from engagement with said cam supporting element.

3. A writing machine having a paper carriage adapted to be moved in letter-spacing order, a cam supporting element on said carriage having a projection thereon, a second carriage paralleling said paper carriage having a rack and a vertically swingable element thereon, a counting carriage, the projection of said cam supporting element adapted to engage the swingable element of said second carriage for moving said paper carriage and said second carriage together, means cooperable with the second carriage rack and the counting carriage for transferring the letterspacing travel order of said paper carriage to said counting carriage, and a fixed stop for releasing said swingable element from engagement with the projection of said cam supporting element.

4. A writing machine having a paper carriage adapted to be moved in letter-spacing order, a cam supporting element on said carriage having a projection thereon, a second carriage paralleling said paper carriage having a rack and a pair of vertically swingable elements, a counting carriage, the proection of said cam supporting element adapted to engage one of the swingable elements of said second carriage for moving said paper carriage and said second carriage together, means cooperable With the second carriage rack and the counting carriage for transferring the letter-spacing travel order of said paper carriage to said counting carriage, and a pair of fixed stops for cooperation with respective swingable elements of said second carriage.

FERDINAND J. TILLMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,003,671 Tillman Sept. 19, 1911 1,270,471 Wahl June 25, 1918 1,358,263 Tillman Nov. 9, 1920 1,379,322 Tillman May 24, 1921 1,452,162 Kupetz Apr. 17, 1923 1,504,800 Wherry Aug. 12, 1924 1,524,729 Euschmann Feb. 3, 1925 1,644,897 Schinke Oct. 11, 1927 2,091,717 Pitman Aug. 31, 1937 

